Coupling device.



I. W. FRAZlH Q F. E. HANSEN COUPLNG DEVICE.

AWUCAHON man sur. 13. w15.

lli

l cierren,

JAMES W. ERMER AND FRE 1E. HANSEN, F CLEVELAND, HO.

I Specincaticn of Letters lfetent. lPgntpmltgeglill Non, 1m, llitnh y .application ille September 13, 1915. Serial 1t o. 50,3%.

To all whom. 12 may concern Be it known that we, (l) JAMES, W. Fnnzinn, (2) Flinn E. HANSEN, citizens of the United States, residing; at Cleveland, in the county oi Cuyahoga and State ot' lOhio, have invented a certain new and useful improvement in Coupling Devices, of which the followings; is a full, clear, and exact description, reference being had to the accompanying); drawings.

This invention relates leener-ally to tire ,iuflaters and more particularly to a novel construction of valve connection between the air supply and the tire to be inflated.

The object of' the invention is to provide an exceedingly simple and highly eflicient device which can be' connected to an air supply pipe and which will normally be closed against the escape of air but readily opened when the device is connected to the initiating valve ci the tire Another object of?, the invention is to provide a ysimple :md eiiicient connection betweeniilie coupling and the tire valve whereby the esc pe et' air at that pointwill be completely avoided, and another object is to provide means for preventing the elastic tire valve gripping means from becoming impaired by contactingf with threads or other moving parts ci' the coupling.

llileretofore elastic packing; rings have been employed for encircling the stern ot' the tire valve and tight lits have been obtained by compressing the elastic packing,r rinp; between two opposed surfaces, vbut usually the ring,T has expanded laterally both internally and externally, and consequently has come in contact with the threads or other moving parts during@M compression, and very soon becomes impaired; and one object, therefore, of this invention is to provide a packinp; ring which shall be so arranged-as to permit interior expansion for the purpose of gripping` the tire valve stein, but arrest the exteriorv lateral expansion and prevent the outer edge of said elastic ring coming in contact with the threads or otherl moving` parts of the coupling.

Another object of the invention is to pro vide novel forms of contactingl surfaces whereby a positive contact at all times is obtained thereby reducing leakage to a minimum.

W ith these and certain other-objects in view, the invention consists in the novel features of construction and combination is a detailed perspective view partly in secv tion of the valve; Fig. 5 is a detail perspective view of the elastic ring and its cup or container; Fig'. 6 is a`detailedsectional view showing the said ring compressed or expanded; Fig. 7 is a vertical sectional view illustrating;r a slight modilication; Fing. 8

is a view showing a still further in odiiication; and Fig. 9 a modiied construction of casingu ln the rufac'ticul embodiment of' our invention we employ a casing 10, which has a bored extension 11., to which iire air supply pipe l2 is attached. The :casing 10 is bored :from each end providing,` an upper chamber 13, and a lower chamber 14C, and an intermediate. partition 15, which is aperturcd centrally and formed with the upper valve seat lo and lower valve sect1?v respectively. fl valve 1.8 is arranged Vwithin the upper chamber 13' and a plug or plunger 19 is fitted into the lower chamber 14 and secured by a set screw to prevent rotation but has n limited vertical movement by providing a recess 21 in the side of plug' and into which the inner end of the set screw tits, A i

The valve 18 is Vheld upon the seat 16 by a spring 22 pressed downwardly by means of the casino` spring inner tace thereof. y dei-ed and grooved at 24, to Twelve til@ Fubber face Q5 in the form of a'rinpg', said ring; being retained by means of a metallic Vrshell 26 spun around the periphery oit the valve and engaging); the edges of the valve and rubber ring and maintaining said ring in its proper position at all times, the rubber face thereof contacting with the annular seat 16.

The upper end of the plug; or plunger 19 is formed with an annular ,groove 27 which surrounds the central bore or passage 28, and seated in this annular lgroove -27 is a rubber ring Q9 the edges of the groove beinp` rolled or peened over the rubber ring -to hold the saine in place. This conw and havingthe upper end ot the cap 23 screwed into the top of the.

seated in a recess forinedn the The valve 18 is shouly Q .l Laomae struction provides an elastic seat at the upper end of the plug or plunger which engages the annular-valve seat 17 and completely cuts oli' the'escape of air when the plug or plunger is moved upwardly 1n the to the tire valve when the valve 18 is unl seated.

The valve 18 is normally held seated uponthe seat 16 by the spring 22, but when the' plug or plunger is pushed upwardly to bring its elastic seat into citact with the seat 17 i :the valve '18 will be unseated by virtue of the .plug or plunger engaging the depending valve stein and carrying the valve upwardly, so that communication is established between thebores 11 and 28 through the apertured hollow valve stem 31 and by this construction theair from the hose can pass to the tire stem.

in' order to provide a perfectly tight connection between the tire valve and the lowerv end of the plug or plunger we employ an elastic ring 32 which is placed directly beneath the end of the plug .or plunger and has a central' opening of the same diameter as the chamber 30. This elastic ring 32 is placedfin a cupor 'container 33 having a central aperture of the same size as the' ring and chamber 30. said cup being open at the top and upon, the Ibottom-is provided with lan annular corrugation 34 but thiscorrugation can be'omitted if desired as shown in Fig. 8. A nut 35 preferably having a left hand thread is screwed upon the lower end of the plug or plunger 19 and at itsl lower end is shaped to' receive the cup 33 with ring 32 the opening in` the bottom of the nut being coextensive with the chamber 30, 'opening in ring 32, and cup 33 so that the end oft-the outer valve can be readily inserted in Vthe chamber 30. Then by turning the nut, the elastic ring 32 is compressed rand as it cannot expand laterally and outwardly, it expands laterally and inwardly as shown in Fig.'6 and firmly grips the tire valve stem thereby providing a perfectly tight connection at' this point and at the same time prevents the' outer edges of the elastic ring coming into contact with the threads or moving parts of the coupling and avoids cutting up or otherwise impairing y the elastic ring.

In order to prevent the'l nut being turned down too far we preferably construct the upper face thereof with an annular groove 36 notched at 36 and arrange a. spring wire ring 37 therein which serves to lock the nut and prevent its withdrawal from the plug or plunger.

InFig. i' we have shown a slight modification in which the plug or plunger 3S is formed at its lower endv with a depending nipple 39 surrounding the central bore or passage and the lower face of said plunger is provided with an annular groove to receive the elastic packing ring l() held in place by a ring 41 which in turn is secured by rolling over the extreme lower'edges f1.2 of the plug or plunger. The nut 43 screws up into the lower end of the casing instead of screwing upon the plug or plunger and is provided with an" inwardly projecting ,39 enters the endfoi'f the valve stein and s aid stem contacts with theelastic packing ring 40 and then by pushing down upon the coupling the plug or plunger is forced upwardly so as to unseat the valve 18 and the air from the hose .connection then passes through into the tire valve and the moment the coupling is disconnected from the outer valve the spring 22 immediately reseats the valve and cuts ofi' the escapo of air. The upper end of the plug or plunger is provided with the elastic face which contacts with the seat 17 and prevents the escape of air during the inilating process. lt will be understood that certain other chan es can -be made to the various elements' wit iin the Scope of the claims without departing from the broad principle of the invention.

In Fig. 9, we have shown a slightly modified form oi' casing 101 which is bored from one end only as shown and avoids the use of the cap 23. The valve 1S, movable plug 38 and nut 43 are exactly the same as shown in Fig. 7 but in the casing we arrange a double valve seat 45 which is held by the inner end Aof the-nut against the shoulder formed withoppositely disposed value seats, of a spring opposed chambers vof a spring pressed valve cooperating with cue sealy and haviuga hollow apergured siem verliehdiug into the opposite chamber, a-

plunger iudeg'iendent of the relive adapted to cooperate with the other valrge seal; and hav ing a limit-ed iuoveiuenein its` chamber, said plunger having acentral air ypassage adapted eo be brought into communication .with

the hollow valve stein, said plunger ai, its

'opposite end being provided willi means for enf" ging 'lire valve stem.

-l. lu a device of the kind described, the

' eomhinaibiou with a casing having upper and lower chambers, ehe intermediate partition centrally aperured and provided with oppoeizely disposed valve seats, said casing having a bored hose connection communicat- "iiig with cheA upper chamber, a valve located in the upper chamber having@ an elastic :lace contacting with the upper vplve seal; anda depending stem projecting through the parition, ineens for maintaining said relire seated, and a plug Aarraiigggeiil in elle lori/er v chamber independent of the valve and, een

reciting ae ir upper end With the depending stern of the valve, slid plug having an elastie surface at its upper end., the-flower end of said plug being; shaped to receive a tire valve as ser forth.

le ln a device ol' the kind described, the combination with a plunger having an air passage extending therethrough, a recess in the lower end of id plunger communicating with said air passage and adapted to revceive a rire valve stein, a nut movable upon ille lower end of said plunger, an elastic ring arranged at elle vend oi the plunger and hav Lug a central aperture aiming with the recess in said plunger, and a. llauged apertured container between said nut and elastic ringy for the purpose specified.

5. lu a device of the kind described, the combination with a plunger having an air passage extending therethrough, a .recess at the lower end Viliereof adapted to receive a rire ualve seein,` a nut vmovable upon the lower end, olf said plunger, the upper end lhereoi'l having au annular groove, a Spring located in said groove, one end of said spring being; connected to the nut, and means finterposed beiaween the nut aud epd of lzhe plunger for ,gripping algire valve seem as serJ forth, l

`.lfn isestimoiiy whereof, we hereunto aihx A-oprfsighalbume in ehe presence of e Witnessu Youi/ies vv.' maarre. 4 JE. HANSEN.

lllliibuess: l i lipari llefluir,

lill

lill 

